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                数列                </h1>
                <p>时间限制：40s&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  空间限制：256MB</p>			</div>
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                                <h3>题目描述</h3><p><div>
<div>给定一个长度为n的正整数数列a[i]。</div>
<div>定义2个位置的graze值为两者位置差与数值差的和，即graze(x,y)=|x-y|+|a[x]-a[y]|。</div>
<div>2种操作（k都是正整数）：</div>
<div>1.Modify x k：将第x个数的值修改为k。</div>
<div>2.Query x k：询问有几个i满足graze(x,i)&lt;=k。因为可持久化数据结构的流行，询问不仅要考虑当前数列，还要</div>
<div>考虑任意历史版本，即统计任意位置上出现过的任意数值与当前的a[x]的graze值&lt;=k的对数。（某位置多次修改为</div>
<div>同样的数值，按多次统计）</div>
</div></p><hr/><h3>输入格式</h3><p><div>第1行两个整数n,q。分别表示数列长度和操作数。</div>
<div>第2行n个正整数，代表初始数列。</div>
<div>第3--q+2行每行一个操作。</div></p><hr/><h3>输出格式</h3><p><p>对于每次询问操作，输出一个非负整数表示答案</p></p><hr/><h3>样例输入</h3><pre>3 5
2 4 3
Query 2 2
Modify 1 3
Query 2 2
Modify 1 2
Query 1 1
</pre><hr/><h3>样例输出</h3><pre>2
3
3
</pre><hr/><h3>提示</h3><p><p>N&lt;=60000 修改操作数&lt;=40000 询问&lt;=50000 Max{a[i]}含修改&lt;=100000</p></p><hr/><h3>题目来源</h3><p>没有写明来源</p>
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